Educational worksheet for students to identify balanced and unbalanced forces in various real-life scenarios.

Let's solve this worksheet step by step. The goal is to determine whether each situation involves balanced or unbalanced forces, based on the definitions provided:

- Balanced forces: Two forces pushing or pulling in opposite directions with equal strength, resulting in no movement.
- Unbalanced forces: One force is stronger than the other, causing movement.

We’ll go through each scenario and decide if it’s balanced or unbalanced.

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1) A book sitting on a table.

- The book is not moving.
- Gravity pulls it down; the table pushes up with equal force.
- Balanced

2) An arm wrestle and you won.

- You won → your arm moved your opponent’s arm.
- One force was stronger.
- Unbalanced

3) A dog pulling on a dog toy with you and it’s a tie.

- “Tie” means neither side is winning → no movement.
- Equal forces.
- Balanced

4) A birdhouse hanging on a tree.

- It’s stationary.
- Gravity pulls down; the branch holds it up with equal force.
- Balanced

5) A tug of war with a team that fell down.

- The team fell → they were pulled.
- Unequal forces caused motion.
- Unbalanced

6) A hammer coming down on a nail.

- Hammer is moving downward → force is applied.
- Motion is occurring.
- Unbalanced

7) A cup sitting in a saucer.

- Not moving.
- Gravity down, support from saucer up.
- Balanced

8) A tennis ball going over the net.

- The ball is in motion.
- Forces (like gravity, air resistance, initial hit) are unbalanced.
- Unbalanced

9) A boy pushing on a boulder that won’t move.

- Boulder doesn’t move → no acceleration.
- Even though he’s pushing, the forces are balanced (friction, normal force).
- Balanced

10) A bowling ball sitting on the alley.

- At rest.
- Gravity and normal force balance.
- Balanced

11) A bowling ball moving down the alley.

- Ball is in motion.
- Force from hand initially, then friction and gravity act.
- But since it's moving, unbalanced forces caused it to start moving.
- Unbalanced

12) Peaches falling off the tree.

- Falling = accelerating due to gravity.
- Gravity > upward forces (air resistance negligible).
- Unbalanced

13) Your mom pushing the shopping cart.

- Cart is moving → force is applied.
- Unbalanced forces cause motion.
- Unbalanced

14) A person leaning against a pole.

- Person not moving.
- Pushing against pole, but pole pushes back.
- No movement → forces balanced.
- Balanced

15) A dart stuck on a dartboard.

- Not moving.
- Forces balanced (gravity vs. board's support).
- Balanced

16) A person pushing on a wall.

- Wall doesn’t move.
- Person applies force, wall pushes back equally.
- No movement → balanced.
- Balanced

17) You rocking on a rocking chair.

- Rocking means back-and-forth motion.
- Movement occurs due to unbalanced forces at different points.
- Unbalanced

18) Leaves falling to the ground.

- Falling under gravity → unbalanced forces.
- Unbalanced

19) Unable to lift the barbell weight.

- Barbell isn't moving → forces are balanced.
- Gravity down, your push up, but not enough to overcome.
- So net force is zero → Balanced

20) Pinecones falling from the trees.

- Falling → motion due to gravity.
- Unbalanced

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✔ Final Answers:

| # | Situation | Balanced or Unbalanced? |
|---|----------|-------------------------|
| 1 | A book sitting on a table. | Balanced |
| 2 | An arm wrestle and you won. | Unbalanced |
| 3 | A dog pulling on a dog toy with you and it’s a tie. | Balanced |
| 4 | A birdhouse hanging on a tree. | Balanced |
| 5 | A tug of war with a team that fell down. | Unbalanced |
| 6 | A hammer coming down on a nail. | Unbalanced |
| 7 | A cup sitting in a saucer. | Balanced |
| 8 | A tennis ball going over the net. | Unbalanced |
| 9 | A boy pushing on a boulder that won’t move. | Balanced |
|10 | A bowling ball sitting on the alley. | Balanced |
|11 | A bowling ball moving down the alley. | Unbalanced |
|12 | Peaches falling off the tree. | Unbalanced |
|13 | Your mom pushing the shopping cart. | Unbalanced |
|14 | A person leaning against a pole. | Balanced |
|15 | A dart stuck on a dart board. | Balanced |
|16 | A person pushing on a wall. | Balanced |
|17 | You rocking on a rocking chair. | Unbalanced |
|18 | Leaves falling to the ground. | Unbalanced |
|19 | Unable to lift the barbell weight. | Balanced |
|20 | Pinecones falling from the trees. | Unbalanced |

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🔍 Key Concept Recap:

- If there is no motion, forces are likely balanced.
- If there is motion or change in motion, forces are unbalanced.
- Even if an object is being pushed, if it doesn’t move, forces are still balanced (e.g., pushing a wall).

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